GB2321495A - Motor vehicle door lock sensor arrangement - Google Patents
Motor vehicle door lock sensor arrangement Download PDFInfo
- Publication number
- GB2321495A GB2321495A GB9726291A GB9726291A GB2321495A GB 2321495 A GB2321495 A GB 2321495A GB 9726291 A GB9726291 A GB 9726291A GB 9726291 A GB9726291 A GB 9726291A GB 2321495 A GB2321495 A GB 2321495A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hall sensor
- information signals
- electronics unit
- evaluation electronics
- sensor chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/70—Operating mechanism
- Y10T70/7051—Using a powered device [e.g., motor]
- Y10T70/7057—Permanent magnet
Abstract
A motor vehicle door lock having a locking system, as well as a closing system acting on the locking system, and having an electronic control and/or monitoring system. The control and/or monitoring system comprises at least one Hall sensor chip which is supplied with current and which comprises a magnetic actuation device and chip electronics. The Hall sensor chip generates first information signals with a high current level I high and second information signals with a low current level I low . The evaluation electronics unit processes the first and second information signals. The evaluation electronics unit also differentiates between the second information signals which exceed a lower current threshold I SU and which are also less than an upper current threshold I SO on the one hand and third information signals which have a current level within the range from zero to I SU on the other hand. The occurrence of information signals which have a current level within the range from zero to the lower current threshold I SU is caused by defects in the Hall sensor chip and/or by defects in the conductor paths between the Hall sensor chip and the evaluation electronics unit or by defects in the power supply to the Hall sensor chip.
Description
1 2321495 Description "A motor vehicle door lock having a lock system as
wed as a closing system acting on the lock system, and having an electronic control and/or monitoring system" This invention relates to a motor vehicle door lock having a lock system, as well as a closing system acting on the lock system, and having an electronic control and/or monitoring system which inquires positions of components of the lock system and/or of the closing system, which control and/or monitoring system comprises at least one Hall sensor chip which is supplied with current and which comprises a magnetic actuation device and chip electronics, the output current of which Hall sensor chip acts on an evaluation electronics unit of the control and/or monitoring system. In particular, this is a motor vehicle door lock which forms part of a central locking system. The Hall sensor chip generates or the Hall sensor chips generate different information signals. The control and/or monitoring system generates control signals. The control signals perform different functions. They may act on actuating drives of the motor vehicle door lock or may operate indicator lamps or other signalling devices. For example, they may act, via actuating drives, on the motor vehicle door lock or on motor vehicle door locks of the central locking system. The invention relates in particular to a motor vehicle door lock in which the cortrol and/or monitoring system comprises two cooperating Hall sensor chips. In detail, it may be a motor vehicle door lock having a lock system and a closing system acting on the lock system, in which the closing system has at least one mechanical closing cylinder with which a mechanical key is associated, wherein the closing cylinder has three operating positions, namely a central initial position, an unlocking and locking position on one side of the initial position, and also a tneft protection position on the other side of the initial position, which can be set by means of the key.
A device for inquiring the operating positions of the closing cylinder, which device acts on an evaluation electrodes unit, is associated with the closing cylinder here. This device for inquiring the operating positions of the closing cylinder generally comprises at least two fixedly mounted Hall sensor chips comprising a Hall sensor and chip electronics, as well as a ferromagnetic actuating element which can be adjusted by the closing cylinder, wherein the initial position constitutes a centre zero position with respect to the evaluation electronics unit. The Hall sensor chips or the evaluation electronics unit have a lower electrical current threshold and an upper electrical current threshold. Motor vehicle door locks such as these are known in various forms of construction (see DE 196 34 321.6 AI, DE 296 18 688.0 Ul, EP 0 694 665 AI).
2 In the motor vehicle door locks described above, the Hall sensor chip generates or the Hall sensor chips generate first information signals with a high current level Ihigh and second information signals with a low current level This has been proven in practice, but operating malfunctions can occur if there are defects in the Hall sensor chip or Hall sensor chips and/or if there are defects in the conductor paths between the locking system and the evaluation electronics unit or in the power supply to the Hall sensor chip or Hall sensor chips.
A basic object of the present invention is to create a motor vehicle door lock of the type described at the outset in which defects in the Hall sensor chip and/or defects in the conductor paths between the Hall sensor chip and the evaluation electronics unit also and/or in the power supply are indicated, so that further operating malfunctions can be prevented after the indication. This indication is described below as an alarm. It may be a visual alarm, e.g. the illumination of an indicator or signal lamp, or it may be an acoustic alarm. The alarm itself may trigger further functions.
According to the present invention, there is provided a motor vehicle door lock having a locking system, as well as a closing system acting on the locking system, and having an electronic control andlor monitoring system which inquires positions of components of the locking system and/or of the closing system, which control and/or monitoring system comprises at least one Hall sensor chip which is supplied with current and which comprises a magnetic actuation device and chip electronics, the output current of which Hall sensor chip acts on an evaluation electronics unit of the control and/or monitoring system, having the features the Hall sensor chip generates first information signals with a high current level Ihi.hand second information signals with a low current level Ilw, 2) the evaluation electronics unit processes the first information signals which are above an upper current threshold Iso to form first control signals, 3) the evaluation electronics unit differentiates between the second information signals which exceed a lower current threshold Isu and which are also less than the 3 aforementioned upper current threshold Iso on the one hand and third information signals which have a current level within the range from zero to 1su on the other hand, 4) the evaluation electronics unit processes the further information signals which exceed the lower current threshold Isu to form control signals, 5) on the occurrence of third information signals which have a current level within the range from zero to the lower current threshold Isu, the evaluation electronics unit triggers an alarm, wherein the occurrence of the third information signals is caused by defects in the Hall sensor chip and/or by defects in the conductor paths between the Hall sensor chip and the evaluadon electronics unit or by defects in the power supply to the Hall sensor chip. The functions described above can be put into efFect without difficulty and without any inventive step, using the means of modem electronics. It is possible to incorporate the current thresholds in the chip electronics. It is also possible, however, to incorporate the current thresholds in the evaluation electronics unit as response current thresholds.
In particular, the invention can be put into effect for a motor vehicle door lock which comprises two cooperating Hall sensor chips, wherein the evaluation electronics unit converts the information signals into control signals when the first information signals are emitted from toth Hall sensor chips, wherein the evaluation electronics unit also generates control signals for the motor vehicle door lock when a first information signal, with a high current threshold is emitted 25 by one of the Hall sensor chips and a second information signal, which exceeds the lower current threshold Isu, is emitted simultaneously by the other Hall sensor chip, and wherein the evaluation electronics unit triggers an alarm when a third information signal, which has a current level within the range from zero to the lower current threshold Isu, is emitted by at least one Hall sensor chip, i.e. when a defect has arisen in one of the Hall sensor chips and/or defects are present in the 30 conductor paths between the Hall sensor chip and the evaluation electronics unit or in the power supply to a Hall sensor chip.
4 The invention is described in more detail below with reference to the drawings, where:
Figure 1 is a diagram showing different information signals and current levels; and Figure 2 is an explanatory block circuit diagram.
In the am of Figure 1, the current intensities which form part of the information signals with current levels Ih.0 and respectively, are plotted as the ordinate. Time is plotted as the abscissa.
In a motor vehicle door lock according to the invention, the Hall sensor chip or Hall sensor chips can generate the information signals for which they are designed and intended corresponding to the course of time on the abscissa. The Hall sensor chip generates first information signals with a high current level Ihih and second information signals with a low current level The evaluation electronics unit can process the information signals which are above an upper current threshold Iso to form control signals. The current level Ihio, and the upper current threshold Iso below the current level I,,,, can be seen in the Figure. Between the two lines which are associ,:Lted with this value there is a hatched region. If a first information signal is situated in the hatched region between Iso and Ith, this results in a control action or the switching on of an indicator lamp or the generation of a signal, as described at the outset. The evaluation electronics unit diffierentiates between rid information signals which exceed a lower current threshold Isu and which are also less than the aforementioned upper threshold Iso, and information signals which have a current level within the range from zero to Isu. The low current level I,,. of the second information signals and the lower current threshold Isu can be seen in the Figure. Between the two associated lines there is a hatched region. If an "on" information signal is situated in this region, this signal is converted into a control command which acts on the motor vehicle door loci; or which can also switch on a signal lamp. A double-hatched region is situated between Isu and the zero line. If the current level of an information signal is within this double-hatched region, an alarTn is triggered. This is the result of an information signal such as this being caused by defects in the Hall sensor chip and/or by defects in the conductor paths between the Hall sensor chip and the evaluation electronics unit, or defects in the power supply to the Hall sensor chip.
In the diagram of the example, there is a free region between the singlehatched regions IsuAl.,, and Iso-Ihih. This can be put into effect within the scope of the present invention and defines a clearance interval which unambiguously differentiates between the first and second information signals. It also falls within the scope of the invention to delimit the current intensities of the information signals I,, and Ibih. in fact by additional upper current thresholds I,.,, and Ihigh, wffich are not shown.
The block circuit diagram of Figure 2 shows two Hall sensor chips X with current/voltage converters IX connected downstream, and the evaluation electronics unit in the form of a controller C. The controller C acts on a driver stage and on an alarm. The servomotors M set the motor vehicle door lock, which is not shown, to the VER (locked), ENT (unlocked) and DS (theft-protected) operating positions. The Hall sensor chips generate corresponding informazion signals, i.e. information signals corresponding to the actuation of the closing cylinder of the motor vehicle door lock. One of the three regions of the diagram of Figure 1 is recognised by the software of the controller C, and one of the servomotors M or the alarm is triggered depending on the overall state of the system.
The term Mall sensor chip" denotes a commercially available Hall plate, preferably comprising a suitable semiconductor material embedded in a plastics material and having integrated components for the switching operation, e.g. an amplifier, a semiconductor s,.,itch and a comparator. The Hall effect, and the effect thereof in the context of switching operations in electrical circuits, are known. Corresponding Hall sensor chips comprising an evaluadon electronics unit also form part of the prior art.
6
Claims (5)
1. A motor vehicle door lock having a locking system, as well as a closing system acting on the locking system, and having an electronic control and/or monitoring system which inquires positions of components of the locking system and/or of the closing system, which control and/or monitoring system comprises at least one Hall sensor chip which is supplied with current and which comprises a magnetic actuation device and chip electronics, the output current of which Hall sensor chip acts on an evaluation electronics unit of the control and/or monitoring system, having the features 1) the Hall sensor chip generates first information signals with a high current level Ihi.hand second information signals with a low current level Ik, 1.2) the evaluation electronics unit processes the first information signals which are above an upper current threshold Iso to form first control signals, 1.3) the evaluation electronics unit differentiates between the second informazion signals which exceed a lower current threshold Isu and which are also less than the aforementioned upper current threshold Iso on the one hand and third information signals which have a current level within the range from zero to Isu on the other hand, 1.4) the evaluation electronics unit processes the further information signals which exceed the lower current threshold Isu to form control signals, 1.5) on the occurrence of third information signals which have a current level within the range from zero to the lower current threshold Isu, the evaluation electronics unit triggers an alarm, 7 wherein the occurrence of the third information signals is caused by defects in the Hall sensor chip and/or by defects in the conductor paths between the Hall sensor chip and the evaluation electronics unit or by defects in the power supply to the Hall sensor chip.
2. A motor vehicle door lock according to claim 1, wherein the current thresholds are incorporated in the chip electronics.
3. A motor vehicle door lock according to claim 1, wherein the current thresholds are incorporated in the evaluation electronics unit as response current thresholds.
4 A motor vehicle door lock according to any one of claims 1 to 3, wherein the control and/or monitoring system comprises two cooperating Hall sensor chips, wherein the evaluation electronics unit converts the information signals into control signals when the first information signals are emitted from both Hall sensor chips, wherein the evaluation electronics unit generates control signals for the motor vehicle door lock when a second information signal, which exceeds the lower current threshold ISu, is emitted by one of the Hall sensor chips, and a first information signal, with the high current threshold INh. is emitted simultaneously by the other Hall sensor chip, and wherein the evaluation electronics unit triggers an alarm when a third information signal, wItich has a current level within the range from zero to the lower current threshold Isu, is emitted by at least one of the Hall sensor chips.
5. A motor vehicle door lock substantially as herein before described with reference to the accompanying drawing(s).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702689A DE19702689B4 (en) | 1997-01-25 | 1997-01-25 | Motor vehicle door lock with lock system and lock system operating on the lock system and electronic control and / or monitoring device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9726291D0 GB9726291D0 (en) | 1998-02-11 |
| GB2321495A true GB2321495A (en) | 1998-07-29 |
| GB2321495B GB2321495B (en) | 2001-05-23 |
Family
ID=7818364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9726291A Expired - Fee Related GB2321495B (en) | 1997-01-25 | 1997-12-15 | A motor vehicle door lock having a lock system as well as a closing system acting on the lock system,and having an electronic control and/or monitoring system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5892443A (en) |
| JP (1) | JPH10259680A (en) |
| DE (1) | DE19702689B4 (en) |
| FR (1) | FR2758848B1 (en) |
| GB (1) | GB2321495B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0984121A3 (en) * | 1998-09-01 | 2003-01-29 | Siemens Aktiengesellschaft | Actuator |
| DE19844778C2 (en) * | 1998-09-30 | 2000-11-30 | Bosch Gmbh Robert | Motor vehicle door lock with electronic motor control |
| US6223571B1 (en) * | 1999-03-26 | 2001-05-01 | Caterpillar Inc. | Magnetically coupled keystart switch |
| US7235901B2 (en) * | 2003-07-11 | 2007-06-26 | Clark Equipment Company | Sensor and interlock on an industrial vehicle |
| WO2005028253A2 (en) * | 2003-09-19 | 2005-03-31 | Automotive Systems Laboratory, Inc. | Magnetic crash sensing method |
| US7463987B2 (en) * | 2003-09-19 | 2008-12-09 | Takata Holdings, Inc. | Magnetic sensing system and method |
| JP4484855B2 (en) * | 2006-09-21 | 2010-06-16 | 三菱電機株式会社 | In-vehicle device remote control device |
| US8495836B2 (en) * | 2009-08-27 | 2013-07-30 | Sargent Manufacturing Company | Door hardware drive mechanism with sensor |
| CN102343885B (en) * | 2010-07-30 | 2014-01-01 | 比亚迪股份有限公司 | Unlocking detection system and method, and steering locking device |
| CN105275268B (en) * | 2015-10-29 | 2017-08-08 | 广东安保翼家物联网智能科技股份有限公司 | It is a kind of that there is the intelligent door lock for showing marketing function |
| DE102017208983A1 (en) | 2017-05-29 | 2018-11-29 | Continental Automotive Gmbh | Motor vehicle with at least one vehicle side, on each of which a front door and a rear door are provided, and methods for operating an electric motor in a respective rear door of the at least one vehicle side |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032791A (en) * | 1989-08-04 | 1991-07-16 | A & E Manufacturing Co., Inc. | Apparatus for testing Hall effect device |
| FR2723127B1 (en) * | 1994-07-27 | 1996-09-27 | Ymos France Sa | ASSEMBLY CONSISTING OF AN ELECTRICAL DOOR LOCK OF A MOTOR VEHICLE ASSOCIATED WITH ITS CONTROL AND SUPPLY MEANS |
| DE29618688U1 (en) * | 1996-10-26 | 1997-01-02 | Kiekert Ag | Device for querying switch positions on a motor vehicle door lock |
| DE19646810C2 (en) * | 1996-11-13 | 1999-02-04 | Kiekert Ag | Motor vehicle door lock with lock system, lock system and device working on evaluation electronics interrogation of the functional positions of the lock cylinder, which works with Hall sensor chips |
-
1997
- 1997-01-25 DE DE19702689A patent/DE19702689B4/en not_active Expired - Fee Related
- 1997-12-15 GB GB9726291A patent/GB2321495B/en not_active Expired - Fee Related
- 1997-12-18 US US08/993,852 patent/US5892443A/en not_active Expired - Fee Related
-
1998
- 1998-01-08 FR FR9800132A patent/FR2758848B1/en not_active Expired - Fee Related
- 1998-01-23 JP JP1105598A patent/JPH10259680A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE19702689A1 (en) | 1998-07-30 |
| GB2321495B (en) | 2001-05-23 |
| JPH10259680A (en) | 1998-09-29 |
| US5892443A (en) | 1999-04-06 |
| DE19702689B4 (en) | 2006-03-23 |
| FR2758848A1 (en) | 1998-07-31 |
| GB9726291D0 (en) | 1998-02-11 |
| FR2758848B1 (en) | 2002-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20051215 |